Abstract: An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

Abstract: An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

Abstract: A valve stem sealing unit (65) for forming a seal round a valve stem (41, 43) of a poppet valve (19, 21) in an engine (1) having a body (5, 7, 13) and operated by a working fluid, the valve stem sealing unit (65) including: a housing (67) defining a through passage (79) running from a first end to a second end, the through passage (69) being arranged to receive a portion of the valve stem (41, 43); a first seal (85) arranged to form a seal between the valve stem (41, 43) and the housing (69) to prevent egress of the working fluid from the first end of the housing (69); and a second seal (89) arranged to form a seal between the housing (69) and a body (5, 7, 13) of the engine (1) to prevent egress of the working fluid from the second end of the housing (69).

Abstract: A method of adjusting the N components of an N component color signal (such as the 3 components of an RGB color signal) with respect to color temperature of illuminating light when imaging a colored subject, comprising the step of computing the difference between each of the components of the color signal for different temperatures of illuminating light, using an algorithm based on the spectral sensitivity of the imaging means and Planck's equation defining black body illumination to obtain N components whose values are independent of the color temperature of the illuminating light. Normalisation of the adjusted values renders the values independent of intensity of illumination and can also reduce the processing time for further processing of the signals. A technique for compensating for gamma correction which is commonly built in cameras, is disclosed.

Abstract: A method of adjusting the N components of an N component colour signal (such as the 3 components of an RGB colour signal) with respect to colour temperature of illuminating light when imaging a coloured subject, comprising the step of computing the difference between each of the components of the colour signal for different temperatures of illuminating light, using an algorithm based on the spectral sensitivity of the imaging means and Planck's equation defining black body illumination to obtain N components whose values are independent of the colour temperature of the illuminating light. Normalisation of the adjusted values renders the values independent of intensity of illumination and can also reduce the processing time for further processing of the signals. A technique for compensating for gamma correction which is commonly built in cameras, is disclosed.